Question

5. Let A 2 Rm£n. Show that (a) kerA = kerAtA; (b) rankAtA = rankAAt = rankA; (c) AtA and AAt have the same nonzero eigenvalues. Hint: Keep in mind the Singular Value Decomposition of matrices.

5. Let A 2 Rm£n. Show that
(a) kerA = kerAtA;
(b) rankAtA = rankAAt = rankA;
(c) AtA and AAt have the same nonzero eigenvalues. Hint: Keep in mind the Singular Value
Decomposition of matrices.

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5. Let A 2 Rm£n. Show that (a) kerA = kerAtA; (b) rankAtA = rankAAt = rankA; (c) AtA and AAt have the same nonzero eigenvalues. Hint: Keep in mind the Singular Value Decomposition of matrices.
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